Reeling device for fabric-rollers of embroidering-machines.



K. KELLER. REELING DEVICE FOHFABRIC'ROLLERS 0F EMBROIDERING MACHINES. APPLICATION FILED Amma. Isla.

1,1 62,491 Patented Nov. 30, 1915.

3.SHEETS-SHEET 1.

COLUMIIIA. LANOGRAPH co.. WASHINGTON. n. C.

K. KELLER. REELING DEVICE FOR FABRIC ROLLERS 0F EMBBOIDERING MACHINES.

APPLICATION FILED AUG. IB. i913.

Patented Nov. 30, 1915.

3 SHEETS-SHEET 2.

APPLICATION FILED AUG. IB. I9I3.

Patented Nov. 30, 1915.

3 SHEETS-SHEET 3.

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COLUMIII:` PLANOGRAPH CU..WASHINGTDN. D. c.

arrasar Acranica.

KARL KELLER, or Anson, SWITZERLAND.

REELING DEVICEV FOR FABRIC-ROLLERS OF EMBROIDERING-IVIACHINES.

Application filed August 18, 1913.

To all whom t may concern Be it knownthat I, KARL KELLER, a citizen of the Republic of Switzerland, residing at Arbon, Switzerland, have invented new and useful Improvements in Feeling Devices for Fabric-Rollers of Embroidering- Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.

In the known reeling devices for fabric rollers of embroidering machines the fabric to be embroidered and to be reeled upon the rollers is usually passed first over a xed guide body having a rough surface of teased fabric, so that a tension is put on said fabric to be embroidered. In other known devices of this kind the fabric passes first over a brake shaft rotating in the opposite direction, or the fabric is passed through a number of brake ledges adjustable one to another and provided with a rough surface producing a frictional resistance, which causes the fabric to be stretched. In all these devices it is, however, nearly impossible to make the fabric sufficiently taut and to reel the latter in such a straight line upon the rollers that the separate seams of the fabric, which consists of a number of separate pieces sewn together, are Yparallel with the longitudinal axis of the rollers. If this is not the case, the fabric is. not uniformly tensioned at all points during the subsequent bracing of the fabric rollers in the embroidering frame. The usually very thin fabric is easily stretched at certain points owing to its great width, 'and the smallest alteration or difference in the brake resistance put in front of the roller, upon which the fabric has to be reeled, causes therefore, the fabric to advance at those points more rapidly or slower, so that the end threads of the fabric form usually a very sinuous line. In the known reeling devices it requires for this reason great skill and much practice to reel up the fabric in a straight line, and in most cases it is further necessary to stop the device several times during each reeling operation, since the fabric has 'Specification of Letters Patent.

Patented Nov. 30, 11.915.

serial No. 755,250.

also to be tensioned by hand and it is necessary to clean it.

Theobj ect of this invention is to provide a reeling device for fabric rollers, which without requiring any particular skill, permits the reeling up of the fabric in such a manner, that the latter is quite even and taut and that each seam and in particular its free edge, is exactly parallel to the longitudinal axis of the fabric rollers. l Several convenient modes of carrying the invention into effect are shown by way of example on the accompanying drawings, in which- Figure l shows a front view of a reeling device according to this invention, Fig. 2 is a side view of Fig. l seen in the direction of the arrow shown in Fig. l, Fig. 3 is a section on the line AMA. of Fig. l, Fig. 4i is a side view of a modified construction, Figs. 5 and 6 show a section and a front view respectively of a detail and Figs. 7 and 8 show corresponding views of a modified construction of this detail.

In Figs. 1-3 l denotes the fabric roller upon which the fabric is to be reeled. The roller l is pivotally mounted at both ends in bearings and its middle portion, or eventually several parts of this roller may be supported by rolls or so-called brackets la (Fig. 3) which engage over and under said fabric roller. The roller may be turned by means of a hand lever 2, or also in a known manner `by power. At the lower end of the device there is provided a brake-shaft 3 carrying a brake-disk 4 and a suitable brake- Inechanism (for instance brake shoes and a hand lever). rlChe shaft 3 carries at one end a crank 5 to rotate said shaft. Above the shaft 3 there is pivotally mounted the roller 6 parallel to the shaft 3 and consisting of a number of separate parts. The roller 6 is supported by several pillars 7 fastened to the floor (one pillar only being shown in the drawing), while its two ends are carried by two brackets 8 suspended on the ceiling.

On the brake shaft 3 are mounted disks 9 provided at their circumference with projecting pins, which engage an endless steel band or a belt 10 or the like passing over the upper roller 6 and provided with holes. A ledge or rail 11 is attached in such a inanner to the tension bands 10, that the revolving brake shaft 3 causes said rail 11, while it remains parallel'to the fabric roller 1, to move upward on one side of the pillar' 7, pass over the roller 6 and move downward on the other side of said pillar 7 The ledge 11 is provided with a clamping or fastening device holding the fabric to be embroidered. This reeling device works as follows: It is assumed, that the fabric to be embroidered is spread lengthwise along the fabric roller 1. One edge of this fabric is then fastened to said fabric roller, not shown, while the other edge is fastened to the clamping rail 11 as soon as the latter has been conveyed by means of the crank 5 to the left hand side of the pillar 7, Fig. 2, and near the fabric roller 1. Without putting any tension on the fabric, the latter is now drawn over the roller 6 by means of the rail 11 till it is taut. The fabric roller 1 is then rotated by means of the crank lever in the direction of the arrow shown in Fig. 2, the brake mechanism acting simultaneously upon the disk 4 of the brake shaft 3. This has the effect to put the necessary tension upon the fabric, so that it is reeled up in an even manner, the rail 11 moving over the roller 6 and conveyed later on downward being kept the whole time parallel to the roller 1. The fabric is therefore reeled up quite straight and parallel to the roller, no matter how strong the tension is. This arrangement permits also to tension the fabric crosswise or by means of mechanical devices or by hand, an oblique running of the threads at the edge of the fabric being prevented. As soon as the fabric has been reeled upon the roller, the edge of the fabric is taken out of the rail 11 and the roller is ready to be put in the embroidering frame. If the width of the fabric to be reeled upon the roller is greater than double the distance between the brake shaft 3 and the roller 6, the middle portion of the fabric is fastened at a suitable distance from the brake shaft 3 to the rail 11, the fabric being fastened in this instance preferably along one of its longitudinal seams. This fabric part is then reeled upon the roller in the usual manner and after this operation has been performed, the rail 11 is moved backward till it is near the fabric edge, whereupon the second half of the fabric is reeled up in the same manner.

In Fig. t there is shown another device according to this invention. This arrangement is in particular adapted to reel up lengths of fabric of great breadth, a repeated suspending of the fabric being eliminated. The tension bands 10 pass in this instance over the brake shaft 3 and the three rollers 6, 61 and 62 and over the guide roll 12, so that the clamping rail 11 connected to these bands may be conveyed from the fabric roller 1 to the guide roll 12. (The other 'l parts of this device are shown in the drawings and they need not to be further eX- plained.) It will be apparent that the invention is not limited to the use of three rollers 6, 61 and 62 it being also possible to provide more than three of such rollers.

Figs. 5 and 6 show on an enlarged scale the clamping device for fastening the fabric to the rail 11, connected at its upper and lower end to the tension member 10. 13 and 14 denote two angle irons forming rails or ledges. 15 denotes a resilient clamping rod bent together and consisting of brass or sheet steel. It-has a length of about 40 inches. This rod presses the fabric 16 from outside between the two ledges 13 and 14E. As soon as there is exerted a pull upon the upper edge of the fabric, the latter is clamped by means of the rod 15 lbetween the angular projections of the ledges 13 and 14 and it is securely held in its proper position.

It is evident, that the hereinbefore described reeling device could as well be made horizontal, if there are particular reasons requiring such an arrangement. The endless tension bands 10 may be replaced by two ropes or the like connected to the rail 11 (see Figs. 7 and 8) the Yone of these ropes being rolled upon a disk of the shaft 3, when the rail 11 is moved, the other being then unrolled from this disk. Y

Figs. 7 and 8 show a modified form of such a clamping device. According to this modification there is fiXedto the rail l1 an iron piece 16 provided with a number of inclined needles 17. These needles 17 project through a bent cap 18 acted upon by a spring 19. In this arrangement the fabric is held in a secure manner by the needles 7 in its proper position, the cap 18 preventing the fabric from disengaging the needles, while the emptied rail 11 is prevented from engaging the fabric, when it is carried backward.

I claim:

1. In a reeling device for fabric rollers of embroidering machines, a fabric roller, a brake shaftv parallel to the latter, a brake mechanism acting upon the brake shaft, guide rollers for the fabric, a rigid member holding the fabric to be reeled up at its free edge or at a parallel distance from this edge and means acted upon by the brake shaft for moving said rigid member parallel to the longitudinal aXis of the fabric roller.

2. In a reeling device for fabric rollers of embroidering machines, a fabric roller, a brake shaft carrying a number of disks provided on their circumference with projections, said shaft being parallel to the fabric roller, a brake mechanism acting upon the brake shaft,xguide rollers for thel fabric, a rigid rail provided with clamping means for holding'the fabric at its freei rear edge or at a` parallel distance from said edge and endless tension means connected toJ said rail and passing over the disks mounted on the brake shaft, said tension means being provided With holes engaged by the projections of said disks.

3. In a reeling device for fabric rollers of embrodering machines, a fabric roller, a brake shaft carrying a number of disks provided on their circumference with projections, said shaft being parallel to the fabric roller, a brake mechanism acting upon the brake shaft, guide rollers for the fabric, a rigid rail, projections on said rail, resilient means Working together With said projections for fastening the free rear edge of the fabric or a part of the latter parallel to this rear edge to said rail and endless tension means connected to said rail and passing over the disks mounted on the brake shaft, said tension means being provided With holes engaged by the projections of said disks.

LL. In a reeling device for fabric rollers of embroidering machines, a fabric roller, a

brake shaft carrying a number of disks provided on their circumference With projections, said shaft being parallel to the fabric roller, a brake mechanism acting upon the brake shaft, guide rollers for the fabric, a rigid rail, ledges provided With angular projections and fixed to said rail, a resilient rod clamping the free rear edge of the fabric or a part of the latter parallel to this edge between said projections when the fabric is stretched and endless tension means connected to said rail and passing over the disks mounted on the brake shaft, said tension means being provided With holes engaged by the projections of said disks.

In testimony that I claim the foregoing as my invention, I have signed my name in presence of tWo subscribing Witnesses.

KARL KELLER.

Nitnessesz ARTHUR S. JosnrrY, RANDALL ATKINSON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

